Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
With the onset of April, Waterloo's average high-temperature sees a rise, moving from March's chilly 44.1°F (6.7°C) to a refreshing 56.8°F (13.8°C). Waterloo, during April nights, observes an average temperature of 40.1°F (4.5°C).Humidity
In April, the average relative humidity is 73%.Rainfall
In Waterloo, in April, during 14.6 rainfall days, 3.19" (81mm) of precipitation is typically accumulated. In Waterloo, during the entire year, the rain falls for 133.6 days and collects up to 28.27" (718mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Waterloo, Iowa. In April, in Waterloo, it is snowing for 1.8 days. Throughout April, 0.75" (19mm) of snow is accumulated. In Waterloo, Iowa, during the entire year, snow falls for 41.6 days and aggregates up to 15.24" (387mm) of snow.Daylight
In April, the average length of the day is 13h and 25min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:35 pm. On the last day of April, in Waterloo, sunrise is at 6:04 am and sunset at 8:08 pm CDT.
Sunshine
In April, the average sunshine is 7.5h.UV index
In April, the average daily maximum UV index in Waterloo is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The average daily UV index of 4 in April transforms into the following instructions:
Ensure safety - Recommendations to avert sunburn are presented. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average April temperature in Waterloo?
What is the average humidity in April in Waterloo?
How many days does it rain in April in Waterloo?
How much does it snow in Waterloo in April?
What is the average length of the day in April in Waterloo?
When is the sunrise / sunset in April in Waterloo?
How long on average sun shines in April in Waterloo?
How high is the UV index in April in Waterloo?
Average temperature in April
Waterloo, IA
- Average high temperature in April: 56.8°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in April: 40.1°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12°F).
Average pressure in April
Waterloo, IA
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in April
Waterloo, IA
- Average wind speed in April: 10.8mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in April
Waterloo, IA
- Average humidity in April: 73%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Waterloo, IA
- Average rainfall in April: 3.19"
The wettest month (with the highest rainfall) is June (4.29").
The driest months (with the least rainfall) are January and February (1.02").
Average rainfall days in April
Waterloo, IA
- Average rainfall days in April: 14.6 days
The month with the highest number of rainy days is June (18.1 days).
The month with the least rainy days is February (4 days).
Average snowfall in April
Waterloo, IA
- Average snowfall in April: 0.75"
The month with the highest snowfall is January (4.21").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Waterloo, IA
- Average snowfall days in April: 1.8 days
The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Waterloo, IA
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in April: 7h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in April
Waterloo, IA
- Average sunshine days in April: 12.4 days
The month with the most sunshine days is October (17.8 days).
The month with the least sunshine days is June (10 days).
Average UV index in April
Waterloo, IA
- Average UV index in April: 4
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Waterloo, IA
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in April
Waterloo, IA
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Waterloo, Iowa, USA
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